Albeet teollee



(No Model.)

A. TROLLER.

WATCH PLATE.

No. 350,903.j l Patented Oct. 12, 1886 f fJ as f UNITED lSTATES PATENT OFFICEO ALBERT TROLLER, OE ROCKFOED, ILLINOIS, ASSIGNOR TO THE EOCKEORD VATOH COMPANY, OF SAME PLACE.

PLATEn SPECIFICATION forming part of Letters Patent No. 350,903, dated October 12,1886. Application tiled March 8, 1856. Serial No. 194,374. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT TROLLER, residing` 'at Rockford, in the county of Vinnebago and State of Illinois, and a citizen ofthe United States, have invented a new and useful Improvement in Full-Plate lVatches, of which the following is a full description, reference being had to the accompanying drawings, in which- Figure l is a plan showing the top plate of my watch with the escapewheel and pallet located in recesses in the face of the plate. Fig. 2 is a vertical section at line .fr of Fig. l. Fig. 3 is a plan sho-wing the underside of the top plate. Fig. 4 is an enlarged detail showing the escape-wheel and the pallet in place in their recesses in the plate B, their bridges being removed. Fig. 5 is a section at line y of Fig. l., looking in the direction ot' the arrow in Fig. l. Fig. 6 is a side elevation showing the bottomiand top plates together, the bridges and some other parts being removed from the upper side of the top plate.

My improvement relates to fullplatc watches. Such watches have heretofore been made by providing one plate with pillars which support the top plate, and the escapewheel and the pallet in such watches have been placed between the two plates. To remove the escape-wheel or the pallet it has been necessary to remove the top plate, which is attended with considerabletrouble and displaccs several other parts of the watch.

One object ot my invention is to dispense with the pillars in a l'ull plate watch, which I accomplish by omitting the pillars from the bottom plate, and by making the top plate very thick and recessing the same on the under side to receive such parts of the watch as are located between the two plates. "Another object ot' my improvement is to so construct a lfull-plate watch that the escapement can be readily removed without disturbing any other parts, which I accomplish by placing the cscapewheel and the pallet in recesses in the face ofthe top plate, all as illustrated in the drawings, and hereinafter described.

In the drawings, A represents the bottom plate o" my improved watch.

B is the top plate, `which is nia-de very 5o thick, the under side being hollowcd ont or recessed to make room for such parts as are located between the two plates. That portion of this plate which is not recessed or cut away rests directly upon the plate A, and is secured thereto by means of screws.

C is the barrel-bridge.

D is a balance-bridge.

E is the escapewheel, and F the pallet, both of which are located in recesses in the face ofthe plate B,(indicated in the drawings by letters c d.)

Cr is a bridge for the escapewheeh and II is a bridge for the pallet. The outer ends of both oi'thesc bridges are, as shown, located in 65 recesses c b in the plate B, and are held in place by screws. By removing the bridges G H the escape-wheel and pallet can be easily removed li'rom the watch without takin g off the top plate and without disturbing any other por- 7c tion ofthe train, which will often be a great advantage in repairing. Itis not necessary to recess to a uniform depth that portion of the under side of the top plate which receives -parts of the train; some parts maybe recessed more than others, according1 to the portion of the train which the recess is to receive. By making the two plates as described I also provide a i'ullplate watch which requires no dustband.

Vhat I claim new, and desire to secure by Letters Patent, is-

In a tultplate watch, the combination,with the bottom plate, A, ot a thick top plate, B, recessed on its under side to receive parts of the movement, and provided with recesses in its upperside extending only partially through the saine, to receive the escape-wheel. and pallet, which are held in place by separate bridges secured in recesses in said top plate, 9o

the said top plate bcingsupperted directly on and secured directly to the bottom plate, sub stantially as described.

aLcER'r TnoLLEE.

litnesscs;

A. WEST, HARRY T. JoNrs. 

